document.write( "Question 239341: how do you graph y=x \n" ); document.write( "
Algebra.Com's Answer #175726 by Theo(13342) You can put this solution on YOUR website! You plot some selected points for x and then calculate the y value and then plot the points on the graph and then draw a straight line through the points.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Example:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "When x = 0, y = 0\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "When x = 10, y = 10\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Plot (x,y) = (0,0) on the graph.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Plot (x,y) = (10,10) on the graph.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Draw a straight line between them.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "There's your graph.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The point (x,y) is x units to the right or left of x = 0, and y units up or down from y = 0.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "If x is negative, you move to the left.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "If y is negative, you move down.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "If x is positive, you move to the right.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "If y is positive, you move up.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "A graph of your equation looks like:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |